PCI-9820 data acquisition card has up to 120MS/s sampling rate,14-bit A/D resolution,based on PCI bus,and was applied in digital ultrasonic detection system,completed function of data acquisition model. A scan wave could be digitized, saved and processed.

• 本研究采用最高采样率为120MS/s,采样精度为14位,PCI总线的高速A/D数据采集卡PCI-9820构造了数据采集模块,实现了数字超声检测系统中A扫描波形数字化、存储、处理功能。